Scraper bucket



L. P.' GREEN SGRAPER BUCKET Oct. 24, 1933,

Filed May` 2v. 1929 ULlHUH Leslie-P Green.

Patented Oct. 24, 1933 Leslie P. Green, Chicago, Ill., assignor to Wood,Chicago, Ill.

James Application May 27, 1929. Serial No. 366,335

5 Claims.

The invention relates to scraper buckets and has for' its primary objectthe provision of an improved bucket of this character, so constructedand arranged as to facilitate the readydischarge of the excavatedmaterial.

Another robject of the invention is the provision of an improved bucketof the character indicated, having special provisions permitting of theready repair and replacement of the parts most liable to wear and injuryin use.

Another object of the invention is the provision of a bucket of thecharacter indicated, especially adapted for use as a drag line scraperbucket.

Other objects will appear hereinafter.

a The invention consists in the combinations and arrangements of partshereinafter described and claimed.

The invention will be best understood by reference to the accompanyingdrawing forming part of the specification and in which- Fig. 1 is aperspective view of a bucket in the form of a scraper bucket andembodying the invention;

Fig. 2, an enlarged front elevation of thesame with portions shown insection; and

Fig. 3, an enlarged `transverse section taken substantially on the planeof the line 3-3 of Fig. 1.

The embodiment of the invention illustrated in the drawing isa drag linescraper bucket and comprises substantially vertical side walls 10extending divergently forward from the ends of a short substantiallyvertical rear wall 11.-' Substantially vertical front walls 12 extendforwardi 1y and substantially parallel to each other from the forwardedges of the side walls 10, as shown. The rear wall 11, the side walls10 and the front walls 12 have outwardly extending perforated securingflanges 13, 14 and 15, respectively, at their lower edges.

Associated with the rear wall 11 is a forwardly and downwardly inclineddigging blade or tail member 16, and somewhat similar forwardly andinwardly inclined digging blades 17 are arranged at the lower edges ofthe divergent side walls 10. The digging blades 16 and 17 are providedat their upper edges with outwardly extending perforated securingflanges 18 and 19, respectively, detachably secured respectively to theflanges 13 and 14 by means of bolts 20. Side extensions or cuttermembers 21 at the ends of the rear digging blade 16 overlap the rearends of the side digging blades 17 and are secured thereto bycountersunk 1 rivets 22, as shown.

Substantially vertical lower extensions 23 are provided at the loweredges of the front walls 12,' being provided at their upper edges withoutwardly extending perforated securing flanges 24 detachably secured toflanges 15 by bolts 20. At their rear edges, the extensions 23 areoverlapped with the forward edges of the blades 17 and secured theretoby means -of countersunk bolts 25, as shown.

Draft plates 26 are secured, as shown, to the forward edges of the frontwalls 12-23 and serve as means for attachment of a bridle 2'7 forconnection with the usual drag line for moving the scraperbucketforwardly in the usual way.

. Likewise at the rear, a clevis 28 is provided for attachment to a reardrag line 29, by means of which the bucket is movedrearwardly in normaloperations.

In the embodimentl of the invention illustrated, a transverse channeliron 30 is secured across the upperforward edges of the front walls 12,being secured thereto by means of vertical angle irons-31` at each sideand stiffened by diagonal braces 32. The channel iron 30 also carriesvertically arranged angle irons or brackets 33 to which is attached aframe work 34 which is also securedy at the rearfto vertical angle ironsor brackets 35. l v

In using the scraper bucket disclosed, kthe same is simply draggedforward' and back over the surface from which it is desired toremove material, thebucket filling by the normal digging' or scraping action ofthe digging blades 16v and 17 4and discharging its load Whenits motionis reversedfas is usual in scraper buckets of the character indicated.By means .of the arrangement disclosed, the interior surface of thebucket4` is practically smooth and uninterrupted so that the excavatedmaterial may readily discharge therefrom by the action of gravitythereon.

In case of wear or injury to thedigging elements, the same may bereadily detached and replaced at the field' of operations and withoutthe need of special shop appliances.

The outwardly extending securing flanges form a stiifening rib aroundthe outside of the bucket, thus greatly increasing its resistanceagainst collapse. It is also to be noted that the said outwardlyextending securing flanges furnish and provide horizontal lower surfacesof considerable extent at the tops of the digging portions of thescraper which contact with the surface of the ground when the diggingmeans has penetrated to its full extent. When such penetration occurs,the lower surfaces of the securing I and heavy loads.

portion of the bucket may be formed o r cast in one integral piece ormember, but in such case, the advantage of partial or piecemealreplacement is lost. The specific form and arrangementY of parts isasimple and effective one for the purpose. Y

preferred form of construction for carrying my invention into effect,this is capable of variation* and modification without departing Afromthe spirit of the invention. I therefore do not wish to be limited tothe precise details disclosedfbut desire to avail myself of 'suchvariationsand modications as fall within the scope ofthe Yappendedclaims.

I claim: i I

1. A scraper bucket provided. with a substantially verticall rear wallhaving 'an outwardly extending perforated securing flange at its loweredge; substantially Vertical sidewalls extending forwardly anddivergently from `the ends of said rear wall and having outwardlyextending perforated securing iianges at their lower edges;substantially vertical front walls 'extending forwardly andsubstantially parallel to each other from the forward edges of saidVside .Walls and provided at .their lower edges with outwardly extendingperforated securing flanges; a forwardly and downwardly inclined diggingblade at the lower edge of said rear wall and provided at its upper edgewith an outwardly extending perforated securing flange; vinwardlyinclined dig'- ging blades at the lower .ledgesof said divergentsidewalls 'and provided at their upper .edges with outwardly extendingperforated securing'iianges; substantially vertical extensions at vvthelower edges of said frontawalls and having outwardly extending4perforated securing flanges at .their upper edges; and means detachablyVsecuring said flanges together. i v.

.2. A scraper bucket provided with a substan. tially .vertical .rearwall having an outwardly extending perforated securing fnangefat itslower edge; substantially vertical sidewalls extending forwardly anddivergently from the ends of said rear wall and having outwardlyyextending perforated securing yflanges at their lower edges;substantiallyvertical front wallsr extending forwardly and substantiallyparallel to each other from the forward edges of said side walls; aforwardly and downwardly inclined digging blade at the lower edge ofsaid rear wall and provided at its upper edge with an outwardlyextending perforated securing flange; inwardly inclined digging bladesat the lower edges of said divergent side walls and provided at theirupper edges with .outwardly extending perforated securing flanges;substantially vertical extensions at the lower edges of said frontwalls; and means detachably securing said anges together.

3. A scraper bucket provided with a substantially vertical rear wallhaving an outwardly ex 4tending perforated securing flange at its lowerWhile I have illustrated and described theedgeysubstantially verticalside walls extending vforwardly and divergently from the ends of saidrear wall and having outwardly extending perforated securing flanges attheir lower edges; substantially vertical front walls extendingforwardly fand substantially parallel .toeach `other from theAforward-edges of said side walls; .a forwardly`r and downwardlyinclined digging .blade at the lower edge of said rear wallrandprovidedat its upper edge with an-outwardlyextending perforated securing flange;inwardly inclined digging; blades at the lower edges of said divergentside walls and provided atrtheir. upper edges with outwardlyextending..perforated securing flanges; substantially Verticalextensions detachably secured `at the lower edges of. said'front walls;and means detachably securingsaid fianges together.V .Y

4. A scraper of the class described comprising bottom sidesections, atail end member having a transverse section-and diverging side sections,said side sections being connected at their frontends with the rear endsof the bottom side sec. tions; cutter members fastened to the frontendsof said 'bottom side sections and arranged in parallel relation and topvsections fastenedto said bottom side sections, tail member and cuttermembers. x

5. A scraper of the class described comprising inwardly inclineddiverging bottom side sections, a tail end member having inwardlyinclined trans-Y verse and diverging-side sections, said side`sec tions-beingfv connected .at .their frontzends` with the rear ends of thebottom side sections, top

sections fastened to said bottomside sections 'ifi'.

and saidtail member and 'having' parallel front end portions, and cuttermembers fastened'to the front ends of thebottcm side sections'and to thelower edges! of said parallelfront portions onthe top sections. i. jY

n i Y LESLIE P. GREEN.

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